> ipfw allows you to clear counters. It is a feature that already exists. > > However, it does not allow you to do it if you are sitting at secure > level 3. > > Why not? I can't think of any good reason why clearing the counters > should be disallowed when sitting at a higher secure level. The counters > are nothing more then statistics. Clearing statistics is not a security > threat.
I just thought of a bad thing. If you allowed the counters to be zero'd (or advanced) at securelevel == 3, then a 'malicious user' could write a cronjob to continually reset them and cause a DoS attack on the system (or in the case of advance, reset them to ridiculously high values), thus filling up the disk. However, one could argue that *IF* they have root, they could just as easily fill the disk with garbage and cause the same attack, ie; # dd if=/dev/zero of=/var/log/misc > The discussion should simply be about that. Not all this garbage > about adding new features. There's a feature that does not seem > to impact security, secure level disallows it, why? I'm not convinced there aren't other security implications from zero'ing (or advancing) the counters. Nate To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
